43321042243 has 2 divisors, whose sum is σ = 43321042244. Its totient is φ = 43321042242.

The previous prime is 43321042231. The next prime is 43321042351. The reversal of 43321042243 is 34224012334.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43321042243 is a prime.

It is not a weakly prime, because it can be changed into another prime (43321072243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21660521121 + 21660521122.

It is an arithmetic number, because the mean of its divisors is an integer number (21660521122).

Almost surely, 2^43321042243 is an apocalyptic number.

43321042243 is a deficient number, since it is larger than the sum of its proper divisors (1).

43321042243 is an equidigital number, since it uses as much as digits as its factorization.

43321042243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 43321042243 its reverse (34224012334), we get a palindrome (77545054577).

The spelling of 43321042243 in words is "forty-three billion, three hundred twenty-one million, forty-two thousand, two hundred forty-three".